The eye as a velocity transducer: an independent information channel?

Anthony J. R. Doyle

doi:10.1117/12.177377

10 June 1994 The eye as a velocity transducer: an independent information channel?

Anthony J. R. Doyle

Proceedings Volume 2218, Helmet- and Head-Mounted Displays and Symbology Design Requirements; (1994) https://doi.org/10.1117/12.177377
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

Aircraft instrumentation presentations are based on the recognition of static patterns. Evidence is produced to show that the visual system can respond to velocity input alone and that when it does so this constitutes an independent channel of information which does not conflict with foveal processing and that this response extends out to the limits of the periphery of vision. The experimental work described tests the ability of this aspect of vision to reduce clutter and obscuration in screen projected instrument displays. Experienced aircrew subjects are required to carry out a simulated low level lob-bomb attack followed by the rapid acquisition of an escape vector while simultaneously tracking the target presented in a space stabilized view. There are four experimental conditions, the tracking task being common to all four. Two conditions use the standard RAF fast jet head-up flight control display and two use a velocity based display which is presented in the annulus between 20 and 40 degrees visual angle. This display does not require foveal attention so the central area can be left clear. Each display is tested in two conditions. In one the tasks are presented side by side forcing subjects to switch gaze between the two. In the other the two are combined. With the peripheral display the tracking task occupies the clear central area but with the NATO version it has to share this with the flight information.

Citation Download Citation

Anthony J. R. Doyle "The eye as a velocity transducer: an independent information channel?", Proc. SPIE 2218, Helmet- and Head-Mounted Displays and Symbology Design Requirements, (10 June 1994); https://doi.org/10.1117/12.177377

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